Portions of my mesh seem to be locked in place and can't be moved, rotated or scaled. How do I fix this?
Managed to figure out what the problem was. I noticed that when I selected the faces or edges of the 'fixed' portion of my mesh, the transform panel stated that nothing was selected. Eventually I tried unhiding the mesh, which seemed to fix the issue and allowed me to manipulate the rest of the mesh again. Normally when you hide portions of the mesh, they don't appear visually on the screen, so I had not expected that to be the solution when the entire mesh was visible. Rehiding a portion of the mesh properly hides those faces so I have no idea why I could see them in the first place.